definition of the word cragsman

Meanwhile I had become a daring cragsman, a character to which an English lad has seldom opportunities of aspiring; for in England there are neither crags nor mountains. — George Borrow, "Lavengro", 1851

A boyhood spent on the cliffs at Kirkcaple had made me a bold cragsman, and the porphyry of the Rooirand clearly gave excellent holds. — John Buchan, "Prester John", 1910